trmccal32 trmccal32

08-01-2015
Mathematics

Answered

what is -a^-2 if a=-5

Verified Answer :

konrad509 konrad509

08-01-2015

\(-a^{-2}=-(-5)^{-2}=-\left(\dfrac{1}{-5}\right)^2=-\dfrac{1}{25}\)

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